ZZT Optical Communication Limited is a Hong Kong based company, it\'s  wholly-owned company Shenzhen Zhong Guang Tong  Communication Co., Ltd. is a leading manufacturer focusing on Fiber Optical passive components. For more than 16 years, a professional and well organized team has been built and keeping developing. All members spare no efforts to cooperate in the whole process of designing, manufacturing, sales and technical supporting. Over-30000-square-meter factory and more than 160 skilled workers enable us big production capacity and reliable quality. Our monthly capacity is 900k pieces of different adapters and 900k pieces of different patch cords terminals. ZZT is an ISO9001 manufacturer. With15 years’ experience, we worked out a reliable system to make sure every product meets the criterial of IEC,Telcordia-GR-326: